Universal atlas axis bone grafting block bridging plate for cervical vertebra

Abstract

The invention provides a universal atlas axis bone grafting block bridging plate for the cervical vertebra. The bridging plate has a transverse plane part and a longitudinal plane part, wherein the transverse plane part is connected to the longitudinal plane part in a T shape, the transverse plane part is inclined to the longitudinal plane part, the transverse plane part is an axis plate positioning block, the axis plate positioning block corresponds to an axis plate, and an axis plate positioning hole is formed in the axis plate positioning block; the longitudinal plane part is divided into abone grafting block fixing area close to the transverse plane part and an atlas positioning area far from the transverse plane part in the longitudinal direction, the bone grafting block fixing areais used for fixing a bone grafting block, and a bone grafting block fixing hole is formed in the bone grafting block fixing area; the atlas positioning area corresponds to an atlas, and an atlas positioning hole is formed in the atlas positioning area. The universal atlas axis bone grafting block bridging plate for the cervical vertebra has the advantages that the stability and the usability are both taken into account, and the biomimetic reconstruction of the posterior column of the cervical vertebra is achieved.

Description

technical field [0001] The invention relates to articles for human life, in particular to a medical device, in particular to a general atlas and axis bone graft bridging plate for cervical vertebrae. Background technique [0002] Injuries, deformities, tumors, and inflammations can damage the ligaments or bony structures of the atlantoaxial spine, resulting in instability or dislocation of the atlantoaxial spine, especially for the narrow posterior arch and cervical spinal canal stenosis caused by the developmental deformity of the atlas. Compression of the spinal cord necessitates removal of the posterior arch to achieve adequate decompression. The main treatment method is posterior atlantoaxial bone graft fusion, but the atlas itself is small, and the posterior arch is the only commonly used bone graft bed. At present, the commonly used alternative method is to do occipital-cervical fusion. However, although this kind of operation achieves the purpose of fusion, it comple...

AI Technical Summary

Problems solved by technology

Even for patients with a complete posterior arch, due to the lack of a uniform fixation material for bone graft fixation, the local stability of the bone graft is insufficient, and the incidence of bone graft failure is high

The methods used in posterior atlantoaxial bone graft fusion, such as screw compression, steel wire binding, and single screw fixation, have poor stability and often lead to absorption of the bone graft, resulting in surgical failure.

Therefore, the existing fixation methods cannot fundamentally realize the physiological reconstruction of the cervical posterior column

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